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Finding the Fourth Proportional to 111,812.40, 167,726.70 and 67,343.40

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Solution

The fourth proportional to 111,812.40, 167,726.70 and 67,343.40 is: 101,019.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,812.40 : 167,726.70 = 67,343.40 : x
  2. Step 2: Convert to fraction form
    111,812.40/167,726.70 = 67,343.40/x
  3. Step 3: Cross multiply
    111,812.40x = 167,726.70 × 67,343.40
  4. Step 4: Simplify right side
    111,812.40x = 11,295,286,248.78
  5. Step 5: Solve for x
    x = 11,295,286,248.78/111,812.40
  6. Step 6: Final answer
    x = 101,019.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.